Earring fastener



FIG. 1 is a perspective view of an earring fastener showing my new design;

FIG. 2 is a side elevational view, looking from the left with respect to FIG. 3;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a side elevational view, looking from the right with respect to FIG. 3. 

The ornamental design for an earring fastener, substantially as shown. 